news_labeler.py: generate topics for a sentence or a paragraph using NTY News Labeler

abstract_tagger.py: generate topics for an entity based on its Wikipedia abstract 

limited_wikifier, unlimited_wikifier: two Wikifier APIs for boosting the matching rate between 
article entities and Wikipedia database (DBpedia)

sentence_to_wiki: generate topics for entities that cannot be matched by Wikifier

replace_topic: replace 600 topics with 79 categories for entities

run.py: the script that runs our pipeline
